CN107701739B - Multilayer complex shell and shell assembly - Google Patents
Multilayer complex shell and shell assembly Download PDFInfo
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- CN107701739B CN107701739B CN201711157326.5A CN201711157326A CN107701739B CN 107701739 B CN107701739 B CN 107701739B CN 201711157326 A CN201711157326 A CN 201711157326A CN 107701739 B CN107701739 B CN 107701739B
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- 238000007789 sealing Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000011257 shell material Substances 0.000 description 60
- 239000010410 layer Substances 0.000 description 26
- 239000007788 liquid Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000013016 damping Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000233866 Fungi Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0281—Housings in two parts which can be orientated in different positions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Abstract
The invention discloses a multilayer complex shell and a shell assembly. The shell comprises a shell outer wall, a guide cone, a main valve guide wall, an auxiliary guide wall and a plurality of rib plates; wherein the outer wall of the shell is connected with the diversion cone through a plurality of rib plates; the diversion cone is positioned inside the outer wall of the shell; a plurality of rib plates are distributed along the circumferential direction of the outer wall of the shell; one end of the main valve guide wall is connected with the inner wall of the guide cone; one end of the auxiliary guide wall is connected with the inner wall of the guide cone, and the auxiliary guide wall is positioned in the main valve guide wall. The invention realizes the axial flow of high-pressure and ultralow-temperature medium, realizes the optimal configuration between the valve actuating mechanism and the flow resistance, reduces the size and weight of the whole product, and can meet the requirements of high working condition and multiple reliable use.
Description
Technical Field
The invention belongs to the field of high-thrust space engines, and particularly relates to a multilayer complex shell and a shell assembly.
Background
Along with the rapid development of aerospace in China, along with the promotion of rocket thrust, various parameters of an engine assembly, such as pressure, flow, size, weight and the like, are greatly increased. However, for the flying products, how to reduce the size and weight as much as possible on the premise of meeting the design parameters with high reliability puts higher demands on the design and process technology of complex shells and shell components.
The existing low-temperature fungus valve shell design technology generally adopts a single-layer structure, has the main functions of bearing pressure and guiding a moving part, and has the following problems although the structure is relatively simple: 1. the flow resistance loss is relatively large, the medium is usually bent by two 90 degrees from the inlet to the outlet and flows out from the circumferential gap of the valve, and the flow resistance loss of the large-flow large-caliber valve is more remarkable due to the design; 2. along with the enlargement of valve latus rectum, the diameter of valve is also great correspondingly, in order to guarantee the good direction of valve, the guide length of valve and diameter ratio are not less than 1.2 generally, and medium runner and valve are led to the axial position and are distributed in different regions in addition on the current valve casing design generally for the total length of casing greatly increased, have enlarged the size weight of whole valve. 3. The integration level of each component is not high, the distribution is scattered, and a valve slow-opening device is arranged on a single shell component according to a conventional design scheme and is difficult to realize.
Further, the above-described problems also exist with a housing assembly consisting of a housing.
Disclosure of Invention
The invention solves the technical problems that: the utility model provides a overcome the not enough of prior art, provides a complicated casing of multilayer and casing subassembly, has solved the technical difficulties that current fungus valve design technique flow resistance loss is great, spare part integrality is not good, can't realize the valve and slowly open the function, realizes the axial flow of high pressure, ultralow temperature medium, realizes the optimal configuration between valve actuating mechanism and the flow resistance, lightens the size weight of whole product to can satisfy the needs of high operating mode and multiple reliable use.
The invention aims at realizing the following technical scheme: according to one aspect of the invention, a multi-layer complex housing is provided, comprising a housing outer wall, a guide cone, a main valve guide wall, a secondary guide wall and a plurality of rib plates; wherein the outer wall of the shell is connected with the diversion cone through a plurality of rib plates; the diversion cone is positioned inside the outer wall of the shell; a plurality of rib plates are distributed along the circumferential direction of the outer wall of the shell; one end of the main valve guide wall is connected with the inner wall of the guide cone; one end of the auxiliary guide wall is connected with the inner wall of the guide cone, and the auxiliary guide wall is positioned in the main valve guide wall.
In the multilayer complex shell, a plurality of rib plates are uniformly distributed along the circumferential direction of the outer wall of the shell.
In the multi-layer complex shell, the axis of the outer wall of the shell, the axis of the guide cone, the axis of the main valve guide wall and the axis of the auxiliary guide wall are overlapped.
In the multilayer complex shell, the outline of the diversion cone is parabolic.
In the multilayer complex shell, a spring supporting seat is arranged on the inner wall of the guide cone, and one end of the guide wall of the main valve is connected with the spring supporting seat.
In the multilayer complex shell, the inner wall of the guide cone is provided with the auxiliary valve seat, and the cone head of the guide cone is provided with the through hole along the axis.
In the multilayer complex shell, the guide wall of the main valve is cylindrical, and the inner diameter of the guide wall is 60-75 mm; the auxiliary guide wall is cylindrical and has an inner diameter of 25mm-30mm.
In the multi-layer complex shell, the diameter of one port of the outer wall of the shell is 120-150 mm, and the diameter of the other port of the outer wall of the shell is 200-250 mm.
In the multilayer complex shell, the body part of the diversion cone is provided with a plurality of first pressure balance holes along the circumferential direction of the body part of the diversion cone; the main valve guide wall is provided with a plurality of second pressure balance holes along the circumference thereof.
According to another aspect of the present invention, there is also provided a multi-layered complex housing assembly comprising: a multi-layered complex housing, a primary valve seat, a primary spring, a secondary valve, a secondary spring, and a pin as described in one aspect of the present invention; the main valve comprises a sealing part, a main guide part and an auxiliary guide part; wherein the sealing part, the main guide part and the auxiliary guide part are integrally formed; the auxiliary valve is embedded in the auxiliary guide part, and the auxiliary spring is sleeved at one end of the auxiliary valve; the auxiliary guide part is provided with a limiting hole, and the pin penetrates through the auxiliary valve and is clamped in the limiting hole; one end of the auxiliary guide part is embedded in the auxiliary guide wall; the main guide part is embedded in the main valve guide wall; the main spring is sleeved on the main valve guide wall, one end of the main spring is attached to the spring supporting seat, and the other end of the main spring is attached to the side wall of the sealing part; the main valve seat is in threaded connection with the outer wall of the shell, and the main valve seat is attached to the sealing part.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention realizes the effects of stabilizing the flow field, enabling the low-temperature medium to flow in an axial flow way and reducing the flow resistance loss through the flow guide cone;
(2) According to the invention, the effect of connecting the diversion cone with the outer wall of the shell and integrating the multi-layer shell is achieved through the plurality of rib plates, the compactness of the structure is improved, the number of components is reduced, and the design reliability of the whole valve is improved;
(3) According to the invention, the shell material of high-temperature alloy steel is selected to improve the bearing capacity of the shell, reduce the wall thickness effect, improve the molding manufacturability and reduce the weight of the shell;
(4) According to the invention, the slow opening device is arranged, so that a liquid damping effect is realized without adding independent components, and each structural member is protected from impact.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a cross-sectional view of a multi-layer complex housing provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a multi-layer complex housing assembly provided by an embodiment of the present invention;
FIG. 3 is a schematic view of a multi-layer complex housing provided by an embodiment of the present invention;
FIG. 4 is another schematic structural view of a multi-layer complex housing provided by an embodiment of the present invention;
fig. 5 is a schematic structural view of a multi-layer complex housing assembly provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Multilayer complex housing embodiment
FIG. 1 is a cross-sectional view of a multi-layer complex housing provided by an embodiment of the present invention; FIG. 3 is a schematic view of a multi-layer complex housing provided by an embodiment of the present invention; fig. 4 is another schematic structural view of a multi-layer complex housing according to an embodiment of the present invention. As shown in fig. 1, 3 and 4, the multi-layered complex housing includes: the device comprises a shell outer wall 1, a guide cone 2, a main valve guide wall 3, an auxiliary guide wall 4 and a plurality of rib plates 11. Wherein,
the outer wall 1 of the shell is connected with the diversion cone 2 through a plurality of rib plates 11. In the concrete implementation, the outer wall 1 of the shell, the plurality of rib plates 11 and the diversion cone 2 are integrally formed.
The cone 2 is located inside the outer wall 1 of the housing. In specific implementation, the diversion cone 2 is located inside the outer wall 1 of the shell, the axis of the outer wall 1 of the shell is coincident with the axis of the diversion cone 2, and a space is reserved between the diversion cone 2 and the outer wall 1 of the shell for the circulation of liquid medium.
A plurality of rib plates 11 are distributed along the circumferential direction of the outer wall 1 of the shell. In specific implementation, the rib plates 11 are uniformly distributed along the circumferential direction of the outer wall 1 of the shell.
One end of the main valve guide wall 3 is connected with the inner wall of the guide cone 2. In the concrete implementation, the right end of the main valve guide wall 3 is connected with the inner wall of the guide cone 2, and is integrally formed.
One end of the sub guide wall 4 is connected to the inner wall of the guide cone 2, and the sub guide wall 4 is located inside the main shutter guide wall 3. In the concrete implementation, the right end of the auxiliary guide wall 4 is connected with the inner wall of the guide cone 2, and is also integrally formed, and the auxiliary guide wall 4 is positioned in the main valve guide wall 3. The axis of the guide cone 2, the axis of the main valve guide wall 3 and the axis of the auxiliary guide wall 4 coincide.
According to the embodiment, the effect of connecting the diversion cone with the outer wall of the shell and integrating the multi-layer shell is achieved through the plurality of rib plates, the structural compactness is improved, the number of components is reduced, and the design reliability of the whole valve is improved.
In the above embodiment, the outline of the guide cone 2 is parabolic. The flow guide cone of the embodiment has the effects of stabilizing the flow field, enabling low-temperature medium to flow in an axial flow mode and reducing flow resistance loss.
In the above embodiment, the materials of the outer wall 1 of the shell, the guide cone 2, the guide wall 3 of the main valve, the guide wall 4 of the auxiliary valve and the rib plates 11 are all high-temperature alloy steel, so that the effects of improving the bearing capacity of the shell, reducing the wall thickness, improving the molding manufacturability and reducing the weight of the shell are achieved.
In the above embodiment, as shown in fig. 1, the inner wall of the guide cone 2 is provided with a spring support seat 10, and one end of the main valve guide wall 3 is connected with the spring support seat 10. In particular, the spring support 10 provided on the inner wall of the guide cone 2 is a circular plane for compressing a main spring 402 described later. The right end of the main valve guide wall 3 is connected with a spring support seat 10.
In the above embodiment, as shown in fig. 1, the inner wall of the flow guiding cone 2 is provided with the auxiliary valve seat 7, and the cone head of the flow guiding cone 2 is provided with the through hole 21 along the axis. In specific implementation, the auxiliary valve seat 7 provided on the inner wall of the guide cone 2 is an inclined surface, and can be used for pressing with an auxiliary valve 403 described later, and the low-temperature medium can flow into the auxiliary guide wall 4 from the through hole 21 provided on the cone head of the guide cone 2.
In the above embodiment, the main shutter guide wall 3 has a cylindrical shape with an inner diameter of 60mm to 75mm. The sub-guide wall 4 has a cylindrical shape with an inner diameter of 25mm to 30mm.
In the above embodiment, the diameter of one port of the outer wall 1 of the housing is 120mm to 150mm, and the diameter of the other port of the outer wall 1 of the housing is 200mm to 250mm. In specific implementation, the diameter of the right port of the outer wall 1 of the shell is 120-150 mm, and the diameter of the left port of the outer wall 1 of the shell is 200-250 mm. The shape of the outer wall 1 of the shell is half of a waist drum shape, so that the outer wall of the shell can be well matched with the diversion cone, and the resistance is reduced.
In the above embodiment, as shown in fig. 1, the body of the guide cone 2 is provided with a plurality of first pressure balance holes 22 along the circumferential direction thereof. After the main valve described later is opened by the first pressure balance holes 22, the low-temperature medium smoothly enters the inner cavity of the guide cone 2, so that the pressure inside and outside the main valve is balanced (the main valve separation is prevented from being influenced by the formation of large pressure difference), and the purposes of full replacement and precooling can be achieved.
The main shutter guide wall 3 is provided with a plurality of second pressure balance holes 32 along its circumference. The second pressure balance holes 32 are arranged to enable the low-temperature liquid medium to smoothly enter and fill the inner slow-open area of the main valve guide wall 3, and the main valve can cover the second pressure balance holes 32 after moving for a certain stroke, so that the liquid medium in the slow-open area cannot flow out as soon as possible to achieve the liquid damping effect.
The embodiment provides a multi-layer complex shell, which has a semi-waist drum-shaped structure and a multi-layer circular cross section; the novel guide cone is of a four-layer structure, and comprises a shell outer wall 1, a guide cone 2, a main valve guide wall 3 and an auxiliary guide wall 4 in sequence from outside to inside. The three-layer structure inside is connected with the outer wall 1 of the shell through 4 rib plates 11 as a whole and is integrally formed. The main core parts are arranged inside the shell, so that the axial size and the number of parts can be reduced. Between the main shutter guide wall 3 and the sub guide wall 4 is a buffer zone 6.
The outer wall of the shell bears the high pressure bearing function of the shell, and the shell is kept from being damaged by high pressure medium. In addition, the wide-mouth end (left end in figure 1) of the outer wall of the shell is of an inner and outer double-thread structure, which is used for bearing the connecting function and providing support for the main valve seat. The design has the advantages of reducing the flange structure, lightening the weight of the shell, being more convenient for repairing the main valve seat, having good maintainability and high reliability.
The main channel between the outer wall 1 of the shell and the flow guiding cone 2 is streamline, the inlet is provided with the flow guiding cone, the area of the ring surface of each section of the flow channel is basically the same and larger than the diameter of the inlet, and the flow field effect can be stabilized to reduce the flow resistance loss.
The guide cone 2 has two main functions: firstly, the surface of the diversion cone 2 provides main guide surfaces of the outer wall of the shell and the main valve, and the dimensional accuracy and the form and position tolerance are strict so as to ensure the reliability of the movement function and the sealing performance of the main valve; and secondly, the outer surface of the diversion cone 2 provides a supporting surface of the main spring and plays a guiding role with the main spring. The position of the spring seat is generally positioned outside the shell and a separate component is set up as a spring supporting surface in the traditional design, and the design of a flange, a static seal and the like can be reduced, so that the number of parts is greatly reduced, the weight of the whole valve is reduced, and the design reliability is improved.
The secondary guide wall 4 has three functions: firstly, provide the vice direction of main valve, lengthen main valve direction total length, make main valve steady, nimble. Secondly, the main valve can be slowly opened by the containing cavity formed between the auxiliary guide wall and the main valve guide wall; and thirdly, arranging an auxiliary valve seat, and forming a liquid buffer area after the auxiliary valve is closed to buffer and protect a moving part for the opening speed of the main valve.
The material of the multilayer complex shell is high-strength high-temperature alloy steel, and the multilayer complex shell is manufactured by adopting novel advanced process forming such as integral precision casting forming or powder metallurgy, 3D printing and the like, so that the design of high strength, light weight, precision and reliability of the multilayer complex shell is realized.
According to the invention, the slow opening device is arranged, so that a liquid damping effect is realized without adding independent components, and each structural member is protected from impact. The slow opening device comprises a main valve 400, a secondary valve 403, a secondary spring 404 and a pin 405, wherein the main valve 400 moves in cooperation with the main valve guide wall 3, and the secondary valve 403 moves in cooperation with the secondary guide wall 4.
Multilayer complex housing assembly embodiments
FIG. 2 is a cross-sectional view of a multi-layer complex housing assembly provided by an embodiment of the present invention. Fig. 5 is a schematic structural view of a multi-layer complex housing assembly provided by an embodiment of the present invention. As shown in fig. 2 and 5, the multi-layered complex housing assembly includes a multi-layered complex housing, a main shutter 400, a main valve seat 401, a main spring 402, a sub shutter 403, a sub spring 404, and a pin 405. The specific implementation process of the multi-layer complex housing is described above, and the embodiment is not described herein.
The main shutter 400 includes a sealing part 410, a main guide part 420, and a sub guide part 430; wherein the sealing part 410, the main guide part 420 and the sub guide part 430 are integrally formed; the auxiliary valve 403 is embedded in the auxiliary guide part 430, and the auxiliary spring 404 is sleeved at one end of the auxiliary valve 403; the auxiliary guide part 430 is provided with a limiting hole 440, and the pin 405 is arranged on the auxiliary valve 403 in a penetrating way and is clamped in the limiting hole 440; one end of the sub guide part 430 is embedded in the sub guide wall 4; the main guide part 420 is embedded in the main valve guide wall 3; the main spring 402 is sleeved on the main valve guide wall 3, one end of the main spring 402 is attached to the spring support seat 10, and the other end of the main spring 402 is attached to the side wall of the sealing part 410; the main valve seat 401 is screwed to the housing outer wall 1, and the main valve seat 401 is fitted to the seal portion 410.
Working principle: the cryogenic medium flows in from the inlet of the housing outer wall 1 and then from the channel between the housing outer wall 1 and the flow cone 2. The initial state is: under the pretightening force of the main spring 402, the sealing part 410 of the main valve 400 is attached to the main valve seat 401, so that the low-temperature medium is stopped in front of the main valve 400; the main valve 400 moves to the inlet end side along the axis under the limit of the main valve guide wall 3 and the auxiliary guide wall 4 against the force of the main spring 402 under the action of the axial force, so that the main valve is opened. The auxiliary valve 403 is positioned before the main valve 400 and seals the inlet through hole, a near sealing area is formed between the end surface of the main guide part 420 and the inner layer of the guide wall 3 of the main valve, the inside is filled with low-temperature liquid medium, the main valve 400 compresses the liquid when continuously moving towards the opening direction, and the liquid medium in the sealing area can only slowly flow out from annular gaps and the like of the guide part by virtue of the principle of incompressible liquid, so that a liquid damping slow opening effect is achieved without adding independent components, and each structural part is protected from being damaged by impact; the axial force is removed and the main shutter 400 returns to its original position under the compression force of the main spring 402.
The multi-layer complex housing assembly of the present embodiment includes the multi-layer complex housing described in the above embodiment, so that the multi-layer complex housing assembly of the present embodiment also has the effects of the multi-layer complex housing described in the above embodiment, and the multi-layer complex housing assembly has the characteristics of compact internal layout, small loss of flow resistance, and the like, and realizes the functions of flexible switching and slow opening of the main shutter, so as to protect the moving member from damage.
The above embodiments are only preferred embodiments of the present invention, and common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the scope of the present invention.
Claims (7)
1. A multi-layer complex housing, comprising: the device comprises a shell outer wall (1), a guide cone (2), a main valve guide wall (3), an auxiliary guide wall (4) and a plurality of rib plates (11); wherein,
the outer wall (1) of the shell is connected with the diversion cone (2) through a plurality of rib plates (11);
the diversion cone (2) is positioned inside the outer wall (1) of the shell;
a plurality of rib plates (11) are distributed along the circumferential direction of the outer wall (1) of the shell;
one end of the main valve guide wall (3) is connected with the inner wall of the guide cone (2);
one end of the auxiliary guide wall (4) is connected with the inner wall of the guide cone (2), and the auxiliary guide wall (4) is positioned in the main valve guide wall (3);
a plurality of rib plates (11) are uniformly distributed along the circumferential direction of the outer wall (1) of the shell;
the axis of the outer wall (1) of the shell, the axis of the guide cone (2), the axis of the guide wall (3) of the main valve and the axis of the auxiliary guide wall (4) are overlapped;
the body part of the diversion cone (2) is provided with a plurality of first pressure balance holes (22) along the circumferential direction of the body part; the main valve guide wall (3) is provided with a plurality of second pressure balance holes (32) along the circumference thereof.
2. The multi-layer complex housing of claim 1, wherein: the outline of the diversion cone (2) is parabolic.
3. The multi-layer complex housing of claim 1, wherein: the inner wall of the guide cone (2) is provided with a spring supporting seat (10), and one end of the main valve guide wall (3) is connected with the spring supporting seat (10).
4. The multi-layer complex housing of claim 1, wherein: the inner wall of the diversion cone (2) is provided with an auxiliary valve seat (7), and the cone head of the diversion cone (2) is provided with a through hole (21) along the axis.
5. The multi-layer complex housing of claim 1, wherein: the main valve guide wall (3) is cylindrical, and the inner diameter of the main valve guide wall is 60-75 mm; the sub-guide wall (4) has a cylindrical shape and an inner diameter of 25mm to 30mm.
6. The multi-layer complex housing of claim 1, wherein: the diameter of one port of the outer wall (1) of the shell is 120-150 mm, and the diameter of the other port of the outer wall (1) of the shell is 200-250 mm.
7. A multi-layer complex housing assembly, comprising: the multi-layered complex housing of any one of claims 1 to 6, a main shutter (400), a main valve seat (401), a main spring (402), a secondary shutter (403), a secondary spring (404) and a pin (405); wherein,
the main shutter (400) includes a sealing part (410), a main guide part (420), and a sub guide part (430); wherein the sealing part (410), the main guide part (420) and the sub guide part (430) are integrally formed;
the auxiliary valve (403) is embedded in the auxiliary guide part (430), and the auxiliary spring (404) is sleeved at one end of the auxiliary valve (403);
the auxiliary guide part (430) is provided with a limiting hole (440), and the pin (405) penetrates through the auxiliary valve (403) and is clamped in the limiting hole (440);
one end of the auxiliary guide part (430) is embedded in the auxiliary guide wall (4);
the main guide part (420) is embedded in the main valve guide wall (3);
the main spring (402) is sleeved on the main valve guide wall (3), one end of the main spring (402) is attached to the spring support seat (10), and the other end of the main spring (402) is attached to the side wall of the sealing part (410);
the main valve seat (401) is in threaded connection with the outer wall (1) of the shell, and the main valve seat (401) is attached to the sealing part (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157326.5A CN107701739B (en) | 2017-11-20 | 2017-11-20 | Multilayer complex shell and shell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157326.5A CN107701739B (en) | 2017-11-20 | 2017-11-20 | Multilayer complex shell and shell assembly |
Publications (2)
| Publication Number | Publication Date |
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| CN107701739A CN107701739A (en) | 2018-02-16 |
| CN107701739B true CN107701739B (en) | 2024-04-09 |
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| CN201711157326.5A Active CN107701739B (en) | 2017-11-20 | 2017-11-20 | Multilayer complex shell and shell assembly |
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| CN108869050A (en) * | 2018-08-29 | 2018-11-23 | 北京航天动力研究所 | Ultralow temperature band pooling feature piston makees dynamic formula high pressure valve |
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| CN106838386A (en) * | 2017-03-06 | 2017-06-13 | 合肥通用机械研究院 | It is a kind of can on-line maintenance axial flow type check valve |
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| CN207893145U (en) * | 2017-11-20 | 2018-09-21 | 北京航天动力研究所 | A kind of multilayer complex casing and housing unit |
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| US20100101668A1 (en) * | 2008-10-28 | 2010-04-29 | Oene Roorda | Check Valve |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937631A (en) * | 2016-04-19 | 2016-09-14 | 上海默作精密仪器有限公司 | Direct-injection sprue type passive needle valve |
| CN206268519U (en) * | 2016-11-25 | 2017-06-20 | 兰州高压阀门有限公司 | A kind of modified form axial flow type check valve |
| CN106439046A (en) * | 2016-12-13 | 2017-02-22 | 成都乘风阀门有限责任公司 | Gap adjusting valve |
| CN106838386A (en) * | 2017-03-06 | 2017-06-13 | 合肥通用机械研究院 | It is a kind of can on-line maintenance axial flow type check valve |
| CN207893145U (en) * | 2017-11-20 | 2018-09-21 | 北京航天动力研究所 | A kind of multilayer complex casing and housing unit |
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